Re: 8.3 beta problems

From: "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com>
To: "Marek Lewczuk" <newsy(at)lewczuk(dot)com>
Cc: "Lista dyskusyjna pgsql-general" <pgsql-general(at)postgresql(dot)org>
Subject: Re: 8.3 beta problems
Date: 2007-10-16 10:56:47
Message-ID: 162867790710160356k2fb24747r22c32ee9e5dd6913@mail.gmail.com
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2007/10/16, Marek Lewczuk <newsy(at)lewczuk(dot)com>:
> Hello,
> I'm testing 8.3beta and I think that there is a problem with gist/gin
> indexes. The performance of 8.3 is very bad comparing to 8.2. I have a
> table with an int[] column indexed using gin (or gist with intarray
> module). Table contains about 1.5m rows, int[] length is from 2 to 6
> elements. Now, on the 8.2 the simple query "select id from bundles where
> path @> array[255,254]" runs about 0.5s returning 25k of rows. The same
> query on 8.3 returns the same number of rows, but it requires about 40s.
> Anybody has the same problems ?
>
> Regards,
> ML
>

attach execution plan, please.

Pavel

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